Riveting machine



Patented Jan. 31, 1933 UNITED STATES ALOIS I'ILAVA, OF PILSEN, CZECHO SLOVAKIA RIVETING MACHINE Application filed March 19, 1931, Serial No. 528,741, and in Czechoslovakia June 4, 1980.

The present invention relates to an adjustable head for pin riveting. In my copending patent application Ser. No. 421,621 a is described a riveting machine wherein an adjustable head comprises two arms at right angles to each other carrying guides for cen treing pins.

According to the present invention the apparatus is improved by employing only a 1 single centreing pin used when the machine is making either vertical or horizontal rivet seams, or even obliquely disposed rivet seams, and this centreing pin is adjustable by adjusting 'means, for example an arm rotating about the axis of the die holder, so that the centreing pin canmove in aplane at right angles to the axis of the die holder and be adjusted to any point lying in a sector within this plane. y means of this improvement it is made possible to adjust the apparatus to perform riveting operations upon articles in the greatest variety of positions, as is required in complicated riveted constructions where the rivet seams run in a variety of different directions.

One form of the invention is shown in the accompanying drawing, in which Fig. 1 is a front elevation and Fig. 2 a side elevation, both representa tions being diagrammatic.

On the die carrier 1 is mounted to rotate about the axis thereof a plate 2, which, by means of bolts 3, is attached to the head l of the riveting machine. This plate 2 has a slot 5 in which engages the-head 6 of the fixing bolt 7, by means of which the adjustable head 8 is fixed, this head being rotatable about the axis of the die. he adjustable head is provided with a single arm 9 for the block 10 which carries a single centreing pin 11 and this pin is adjusted in position to suit the distance between the rivets.

The parts 9 and 10 and 5, 7 and 3 form adjusting means for the single centreing pin 11 which allow this centreing pin to be adjusted through a plane at right angles to the axis of the die holder and to be brought to any point in a sector lying in this plane, so that as will be described below a single centreing pin can be used for horizontal, verticalor obliquely disposed riveted seams at any angle. a

In riveting'horizontal seams the apparatus is used in the position illustrated in thedrawjing.. If vertical seams are to be riveted the bolt 7 is loosened and the adjustablehead is turned through 90 and in this position it is fastened again by means of the bolt 7 I In riveting obliquely disposed seams the adjustable head is fixed in the horizontal or r vertical position according to the direction of the oblique seam and after first loosening the bolts 3 theadjustable head is brought by means of the worm 12 into the plane of the oblique seam and in this position it is fixed by means of the bolts 3. The turning of the f adjustable head is efi'ected by the engage: I I ment of the worm 12, which is mounted in a bearing 13 rigid with the head 4 of the machine, with a toothed segment provided ,on the plate 2.

By this construction according to the present invention above described the riveting of seams in any direction is made possible with r the use of a single centreing pin, so that a second arm of the adjustable head becomes unnecessary.

1 I claim: v

1. In a rivetingmachine, the combination of a riveting head carrying a die holder, a 30 support rotatable on the riveting head about the axis of the die holder, a single arm rotatable and adjustable on said support whereby said arm' may be oscillated more than about the axis of the die'holder and a single 8.5

centering pin carried by said arm.

2. A. riveting machine comprising the combination with the elements claimed in claim 1, of means for rotating the support comprising a worm wheel on the support meshing 90 with a worm on the head of the riveting machine. 1

3. In a riveting machine, the combination of a riveting head carrying a die holder, an adjustable head comprising a hub rotatable about said die holder and an arm extending radially from said hub, a centering pin ad- ,justable in said arm, a support interposed between the. riveting head and adjustable head and rotatable about the die holder, 

